405010505 has 32 divisors (see below), whose sum is σ = 519837696. Its totient is φ = 302400000.

The previous prime is 405010477. The next prime is 405010513. The reversal of 405010505 is 505010504.

It is not a de Polignac number, because 405010505 - 2¹⁸ = 404748361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 641540 + ... + 642170.

It is an arithmetic number, because the mean of its divisors is an integer number (16244928).

Almost surely, 2^405010505 is an apocalyptic number.

It is an amenable number.

405010505 is a deficient number, since it is larger than the sum of its proper divisors (114827191).

405010505 is a wasteful number, since it uses less digits than its factorization.

405010505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 405010505 is about 20124.8727946290. The cubic root of 405010505 is about 739.8700191717.

Subtracting 405010505 from its reverse (505010504), we obtain a palindrome (99999999).

The spelling of 405010505 in words is "four hundred five million, ten thousand, five hundred five".